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核-壳结构Fe_3O_4@C磁性纳米颗粒的制备及其结构表征
Synthesis and characterization of core-shell-structural Fe_3O_4@C magnetic nanoparticles

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文摘 本文利用水热法制备了直径100 nm的核-壳结构Fe_3O_4@C磁性纳米颗粒。利用TEM(透射电子显微镜)、XRD(X射线衍射仪)技术对其形貌、成份及微观结构进行了分析,利用VSM(振动样品磁强计)对样品的宏观磁性进行了表征。研究结果表明,所制备的Fe_3O_4@C磁性纳米颗粒呈现核-壳结构,壳碳层的厚度约为15 nm,分散性良好且尺寸均匀,样品的饱和磁化强度为28 emu/g。Fe_3O_4@C磁性纳米颗粒在生物技术和医学领域具有广泛应用前景。
其他语种文摘 Core-shell-structural Fe_3O_4@C magnetic nanoparticles were successfully synthesized by a simple hydrothermal method.The morphology,structure,and chemistry of the core-shell-structural Fe_3O_4@C magnetic nanoparticles were comprehensively characterized by various functions of TEM and XRD techniques.The results show that individual Fe_3O_4@C nanoparticles have a uniform size and are well dispersed.The average diameter of the Fe_3O_4@C nanoparticles is approximate 100 nm,among which carbon shell is about 15 nm.The magnetic measurement indicates that the saturation magnetization of the Fe_3O_4@C nanoparticles is 28 emu/g.It is believed that the Fe_3O_4@C should have a broad applications in the field of biology and medicines.
来源 电子显微学报 ,2012,31(5):406-410 【核心库】
关键词 Fe_3O_4@C ; 核-壳结构 ; TEM ; XRD ; VSM ; 磁性能
地址

兰州大学物理科学与技术学院, 磁学与磁性材料教育部重点实验室, 甘肃, 兰州, 730000

语种 中文
ISSN 1000-6281
学科 物理学;一般工业技术;金属学与金属工艺
基金 国家重大科学研究计划 ;  甘肃省自然科学基金 ;  中央高校基本科研业务费 ;  国家自然科学基金资助项目
文献收藏号 CSCD:4666314

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引证文献 6

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